Lactic Acid Bacteria
https://serc.carleton.edu/microbelife/k12/LIMW/lactic_acid.html

Living in the Microbial World Workshop, Marine Biological Laboratory

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This on-line exercise is focused on lactic acid bacteria, a group of related bacteria that produce lactic acid as a result of carbohydrate fermentation. It includes a protocol for the enrichment of lactic acid bacteria from enriched samples (like yogurt, sauerkraut, decaying plant matter, and tooth plaque). Three parameters are measured: growth, culture diversity, and pH. The exercise also includes instructions for the isolation of some of these bacteria by using the streak-plate method.

Subject: Biology:Ecology:Metabolism, Biology:Diversity, Microbiology, Microbiology:Methods of Microbiology :Culturing Methods
Resource Type: Activities:Lab Activity
Grade Level: College Lower (13-14), Middle (6-8), High School (9-12)